python升级

[smallbaby]

pass

[smallbaby]

在工作中，从运维手中申请到的机器上，python为2.6，不符合开发要求。需要从2.6升级到2.7.9，最初升级有点手忙脚乱毫无章法，引出很多不该有的错误导致升级失败。随着失败的问题逐个解决，总结了python升级的流程，按照此流程大部分

开会。。
稍后补充

安装依赖的lib

yum groupinstall "Development tools" yum install zlib-devel yum install bzip2-devel yum install openssl-devel yum install @ncurses-devel yum install sqlite-devel yum install ncurses-devel yum install python-devel yum install mysql-devel yum -y install tkinter yum -y install bzip2-devel yum -y install zlib-devel yum -y install readline-devel yum -y install sqlite-devel yum -y install tk-devel yum -y install ncurses-devel yum -y install db4-devel yum -y install gdbm-devel yum -y install openssl-devel

安装python2.7

wget --no-check-certificate https://www.python.org/ftp/python/2.7.9/Python-2.7.9.tar.xz tar xf Python-2.7.9.tar.xz && cd Python-2.7.9 ./configure --prefix=/usr/local && make && make install

python切换

rm /usr/local/bin/python

ln -s /usr/local/bin/python2.7 /usr/local/bin/python

ln -s /usr/bin/python2.6 /usr/local/bin/python

安装pip

wget https://bootstrap.pypa.io/get-pip.py && python get-pip.py

安装依赖插件

pip install mysql-python
pip install xlrd
pip install xlwt
pip install numpy
easy_install cx-oracle
pip2.7 install web.py
pip2.7 install requests
pip2.7 install celery
pip2.7 install DBUtils
pip2.7 install pandas

问题

问题1：升级后导致yum不可用

解决：vim /usr/bin/yum 修改#!/usr/bin/python 》 #!/usr/bin/python2.6

问题2：python2.7命令行下光标不能左右摇摆

wget https://pypi.python.org/packages/source/r/readline/readline-6.2.4.1.tar.gz#md5=578237939c81fdbc2c8334d168b17907 --no-check-certificate
tar -zxvf readline-6.2.4.1.tar.gz && cd readline-6.2.4.1 && python setup.py install

问题3 ERROR: numpy.distutils.system_info.NotFoundError: no lapack/blas resources found

yum install lapack lapack-devel blas blas-devel
sudo pip install scipy
sudo pip install scikit-learn